The 326 Series windows are an integrated system consisting of casement, awning, picture window, side load single hung and single slider configurations, and are engineered to excel in light commercial and premium residential installations. Available with integral nailing fin, retro flange or block frame 3-½-inch frame width with clean, modern lines. In a range of solid and laminated colors with multiple T bar and astragal options for hung/slider as well as casement/awning/picture window, the system is designed for enhanced thermal performance and DP50 baseline.